Abstract:

This study focuses on the teaching of electron transport layer materials within the Traditional Energy and New Energy curriculum， using perovskite solar cells as a starting point. It integrates the cutting-edge research on chemical bath deposition （CBD） of tin oxide （SnO₂） electron transport layers into teaching practice. The study employs scanning electron microscopy （SEM）， X-ray diffraction （XRD） and photoluminescence spectroscopy （PL） to characterize the SnO₂ thin films prepared by CBD. It then applies these films to fabricate perovskite solar cells， evaluating their impact on device performance. The results show that compared to SnO₂ thin films prepared by the traditional spin-coating method， those prepared by CBD are more uniform and denser， exhibit better crystallinity and higher electron extraction capability， ultimately achieving higher device efficiency. This research constructs a “Theory-Practice-Inquiry-Innovation” teaching model. By designing a teaching experiment on CBD of SnO₂ electron transport layers， it effectively enhances students' learning interest， deepens their understanding of theoretical knowledge and stimulates their enthusiasm for exploring the field of new energy. This research provides a new approach for experimental teaching reform in universities and holds significant importance for cultivating new energy talents with practical skills and an innovative spirit.

Key words: Traditional energy and new energy, Chemical bath deposition, Tin oxide, Electron transport layer, Perovskite solar cells, Experimental teaching, Teaching reform